Opin vísindi
Browsing by Department "Faculty of Natural Resources and Environmental Sciences (AUI)"
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Browsing by Department "Faculty of Natural Resources and Environmental Sciences (AUI)"
Now showing items 1-20 of 49
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(Frontiers Media SA, 2019-01-09)High latitude dust is an important contributor to the global dust cycle, which affects the radiative balance of the atmosphere. The frequency and severity of dust events are driven by variables such as wind speed, precipitation, temperature, surface ... -
(Agricultural University of Iceland, 2019)The only native tree species in Iceland forming woodland is the mountain birch. Since human settlement in the 9th century AD, natural birch woodlands have decreased from around 28% to 1.5% of the terrestrial area. In this paper we estimated and compared ...
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(Springer Science and Business Media LLC, 2018-07-09)Global warming is predicted to impact high-latitude and high-altitude forests severely, jeopardizing their overall functioning and carbon storage, both of which depend on the warming response of tree fine root systems. This paper investigates the effect ...
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(Frontiers Media SA, 2018-12-03)Several important ice-free areas (e.g., Seymour Island, Cape Lamb on Vega Island, Terrapin Hill) are located in the Eastern Antarctic Peninsula region. The largest of these ice-free areas can be found on the Ulu Peninsula, James Ross Island, where this ...
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(Agricultural University of Iceland, 2016)Degradation of ecosystems and introductions of invasive species pose a threat to global biodiversity. Ecosystem restoration and revegetation actions are important for amending habitat loss and for the protection of species of plants and animals. Iceland ...
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(Frontiers Media SA, 2019-07-03)In this work we use chemical fingerprints as characteristics ratios of specific crustal elements Ca/Al, Fe/Al, K/Al, Mg/Al, Mn/Al, Ca/Fe, and Mg/Fe to investigate the long-range transport of volcanic aerosols from Iceland. Volcanic dust enters the ...
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(Elsevier BV, 2019-08)Soil warming (0–5.5 °C above controls) effects on ectomycorrhizal growth, carbon sequestration and community composition were examined in a Picea sitchensis forest spanning a geothermal gradient in Iceland. Fungal communities were assayed with sand-filled ...
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(Agricultural University of Iceland, 2017)Bumblebees (Bombus spp.) are pollinators of especially high conservation interest. They have behaviours (pollen-gathering, buzz pollination), morphological structures (branched body hairs well-adapted for retaining pollen), and endothermic capabilities, ...
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(Agricultural University of Iceland, 2017)An experiment with three perennial energy crops – common mugwort (Artemisia vulgaris L.), cup plant (Silphium perfoliatum L.) and virginia mallow (Sida hermaphrodita Rusby) has been carried out in Lithuania (55°43′N, 21°28′E) in order to evaluate the ...
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(Agricultural University of Iceland, 2019)Predicted genetic progress in production traits was compared using three different models for genetic evaluation of Icelandic dairy cows. The models were: a random regression (RR) test-day model, model using lactation yields until day 305 from calving ...
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(Agricultural University of Iceland, 2016)The effect of harbour seal predation on salmonids has been frequently debated, although interactions between these species have never been thoroughly investigated in Icelandic waters prior to this study. We investigated the diet of harbour seals in a ...
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(Agricultural University of Iceland, 2020)Thirty-seven dairy cows of the Icelandic breed were used in a change-over design experiment. The aim was to analyse the effects of moderate addition of high-palmitic acid (C16:0) fat supplement to a grass silage-based diet. There were three experimental ...
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(Wiley, 2019-03-06)Molecular serum markers that can identify early reversible osteoarthritis (OA) in horses are lacking. Objectives: We studied serum concentrations of a novel cartilage oligomeric matrix protein (COMP) neo-epitope in horses subjected to short-term exercise ...
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(Agricultural University of Iceland, 2018)Geothermal areas can be local sources of greenhouse gases, both directly from the geothermal system or because of soil warming effects on biological sources. In this study we repeated field measurements methane (CH4) and nitrous oxide (N2O) fluxes along ...
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(Agricultural University of Iceland, 2019)The incidence of horticultural pests in combination with increased frequency of extreme weather events, like summer drought, can compromise crop production in Nordic agricultural systems during the already short summer growing season. In particular, ...
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(Copernicus GmbH, 2019-08-06)Afforestation is a strategy to sequester atmospheric carbon in the terrestrial system and to enhance ecosystem services. Iceland's large areas of formerly vegetated and now degraded ecosystems therefore have a high potential to act as carbon sinks. ...
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(Springer Nature, 2018-09-27)Along with climate change, herbivory is considered a main driver of ecosystem change in terrestrial Arctic environments. Understanding how herbivory influences the resilience of Arctic ecosystems to ongoing environmental changes is essential to inform ...
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(Elsevier BV, 2018-07)Managed northern peatlands are an important source of the strong greenhouse gas nitrous oxide (N2O). However, N2O emissions from these managed peatlands display a high spatial variability, and processes governing N2O production and emissions from these ...
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(Agricultural University of Iceland, 2016-06)The Icelandic goat is an indigenous breed, descendant of goats brought to Iceland by Nordic and Celtic settlers in the 9th century (Adalsteinsson 1981). The population is estimated to have been below 1000 individuals for centuries and critically ...
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(Wiley, 2018-02-28)1. Human activities have caused global changes of atmospheric chemistry resulting in increased temperature especially in the colder regions of the northern hemisphere. Since warming of the environment can have drastic effects on terrestrial ecosys-tems ...
Now showing items 1-20 of 49